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      07-08-2018, 04:45 PM   #1
P416
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Exclamation Help E90 Error Code P0303 Cylinder 3 Misfire

Hey I have a BMW E90 2011 323i. Yesterday my car started misfiring and stumbling while stopped. Engine light turned on I got the code P0303 Cylinder 3 misfire. I ordered spark plugs online from germanparts.ca

This is what i purchased: BOSCH FR7NPP332 (OEM#12122158253)
https://order.germanparts.ca/parts/b...2.5l-24v/2329B

According to realoem.com my car came with (OEM#12120035915)

Now I'm thinking if I ordered the wrong plugs and if I shouldve bought NGK PLZFR6A11S (OEM#12120035915) instead:
https://order.germanparts.ca/parts/b...2.5l-24v/1329B

Will the ones I purchased fit my car even tho it has a different OEM#?

Please advise,
Thank you.

Last edited by P416; 07-12-2018 at 01:45 AM.
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      07-08-2018, 05:17 PM   #2
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Same car and same situation... BOSCH FR7NPP332 Spark Plugs for almost 2 years with no problems at all.
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      07-08-2018, 05:34 PM   #3
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Quote:
Originally Posted by Bmwner View Post
Same car and same situation... BOSCH FR7NPP332 Spark Plugs for almost 2 years with no problems at all.
Thanks! I almost emailed germanparts if it's possible to cancel my order if it hasnt shipped yet. I will give that product a try.
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      07-08-2018, 09:46 PM   #4
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Code P0303 Cylinder 3 misfire, might be injectors more then plugs.

I had codes just a few weeks ago
P0301
P0300
P0304

Injectors were all replaced, no more issues.

Just a heads up that it might not be or could be more then plugs alone.
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      07-08-2018, 09:56 PM   #5
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Quote:
Originally Posted by The Geezer View Post
Code P0303 Cylinder 3 misfire, might be injectors more then plugs.

I had codes just a few weeks ago
P0301
P0300
P0304

Injectors were all replaced, no more issues.

Just a heads up that it might not be or could be more then plugs alone.
If its the injector do i have to replace all of it or just the one that failed?
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      07-08-2018, 10:01 PM   #6
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I replaced all of mind due to older index, if you got Index 5 index 8 or index 9 you should replace them all with index 11 or 12.

Old rule of thumb, once one goes the others will follow at some point. Just my 2 cents worth.

But yes you can just change the one injector if thats your only option.

I am not sure about yours, but mine new OEM from BMW were about $350 each, I ended up getting new/used ones for $75 each
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Last edited by The Geezer; 07-08-2018 at 10:42 PM.
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      07-10-2018, 12:21 PM   #7
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Quote:
Originally Posted by Bmwner View Post
Same car and same situation... BOSCH FR7NPP332 Spark Plugs for almost 2 years with no problems at all.
Hey man shop just emailed me and said that the spark plugs are not compatible with a 2011 323i

"that part number doesn’t match with your car. My software is giving me a part number of 12120037663 for plugs"

Can you confirm if you have the Bosch #12122158253

Thanks

Last edited by P416; 07-10-2018 at 12:33 PM.
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      07-10-2018, 07:04 PM   #8
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i found one of the boxes...
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      07-10-2018, 07:17 PM   #9
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Quote:
Originally Posted by Bmwner View Post
i found one of the boxes...
Not sure why the shop said it's not compatible.
Does it need to have the same OEM#?

My car came with OEM#12120035915

I ordered Bosch OEM#12122158253
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      07-10-2018, 07:27 PM   #10
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Quote:
Originally Posted by P416 View Post
Not sure why the shop said it's not compatible.
Does it need to have the same OEM#?

My car came with OEM#12120035915

I ordered Bosch OEM#12122158253
I bought these Bosh because i saw them on Germnparts.ca and so fr so good. Did Germanparts confirm fitment ? . If you're not sure , I would say return them and order the NGK plugs .
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      07-11-2018, 02:32 PM   #11
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Quote:
Originally Posted by Bmwner View Post
I bought these Bosh because i saw them on Germnparts.ca and so fr so good. Did Germanparts confirm fitment ? . If you're not sure , I would say return them and order the NGK plugs .
BMW dealer emailed me

"The spark plug you list is for the same car but different production date. I need your vin to give you the correct info."

"(OEM#12120035915) substitutes to (OEM#12122158253) so technically they are the same part"

He said that I have the wrong plugs unless the NGK crosses to the Bosch.

and I'm still confused. I'm looking at realoem.com both #12120037663 NGK & #12122158253 was both found on a E90 LCI 2007-2011

and it says Supersedes:
12120032138 NGK (09/01/2004 - 12/15/2009) What does that mean?

Last edited by P416; 07-11-2018 at 06:53 PM.
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      07-12-2018, 08:44 PM   #12
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Quote:
Originally Posted by P416 View Post
BMW dealer emailed me

"The spark plug you list is for the same car but different production date. I need your vin to give you the correct info."

"(OEM#12120035915) substitutes to (OEM#12122158253) so technically they are the same part"

He said that I have the wrong plugs unless the NGK crosses to the Bosch.

and I'm still confused. I'm looking at realoem.com both #12120037663 NGK & #12122158253 was both found on a E90 LCI 2007-2011

and it says Supersedes:
12120032138 NGK (09/01/2004 - 12/15/2009) What does that mean?
to be honest, im confused and dont know what to tell u. The bosch spark plugs work. I mean, no misfires, no warning lights , no problems at all. I did not even notice any difference between those and the OEM S/P.
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      07-12-2018, 08:50 PM   #13
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Quote:
Originally Posted by P416 View Post
Hey I have a BMW E90 2011 323i. Yesterday my car started misfiring and stumbling while stopped. Engine light turned on I got the code P0303 Cylinder 3 misfire. I ordered spark plugs online from germanparts.ca

This is what i purchased: BOSCH FR7NPP332 (OEM#12122158253)
https://order.germanparts.ca/parts/b...2.5l-24v/2329B



According to realoem.com my car came with (OEM#12120035915)

Now I'm thinking if I ordered the wrong plugs and if I shouldve bought NGK PLZFR6A11S (OEM#12120035915) instead:
https://order.germanparts.ca/parts/b...2.5l-24v/1329B

Will the ones I purchased fit my car even tho it has a different OEM#?

Please advise,
Thank you.
Check your coils same thing happend to me..

Last edited by Bmw_Crazy; 07-12-2018 at 08:56 PM.
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      07-13-2018, 10:04 AM   #14
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When did the check engine light come on to let you know you had a issue?

If it was under under load (while driving) would be a coil issue most likely.

If it was from cold start would be a fuel injector issue most likely.
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